[adm5120] remove 2.6.25 specific stuff

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@12598 3c298f89-4303-0410-b956-a3cf2f4a3e73

3 files changed, 0 insertions, 958 deletions

diff --git a/target/linux/adm5120/files/drivers/mtd/maps/adm5120-flash.c b/target/linux/adm5120/files/drivers/mtd/maps/adm5120-flash.c
deleted file mode 100644
index c637c4ff0..000000000
--- a/target/linux/adm5120/files/drivers/mtd/maps/adm5120-flash.c
+++ /dev/null
@@ -1,571 +0,0 @@
-/*
- *  $Id$
- *
- *  Platform driver for NOR flash devices on ADM5120 based boards
- *
- *  Copyright (C) 2007 OpenWrt.org
- *  Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
- *
- *  This file was derived from: drivers/mtd/map/physmap.c
- *	Copyright (C) 2003 MontaVista Software Inc.
- *	Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- *
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/io.h>
-#include <linux/device.h>
-#include <linux/platform_device.h>
-
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/map.h>
-#include <linux/mtd/partitions.h>
-
-#include <adm5120_defs.h>
-#include <adm5120_switch.h>
-#include <adm5120_mpmc.h>
-#include <adm5120_platform.h>
-
-#define DRV_NAME	"adm5120-flash"
-#define DRV_DESC	"ADM5120 flash MAP driver"
-#define MAX_PARSED_PARTS 8
-
-#ifdef ADM5120_FLASH_DEBUG
-#define MAP_DBG(m, f, a...)	printk(KERN_INFO "%s: " f, (m->name) , ## a)
-#else
-#define MAP_DBG(m, f, a...)	do {} while (0)
-#endif
-#define MAP_ERR(m, f, a...)	printk(KERN_ERR "%s: " f, (m->name) , ## a)
-#define MAP_INFO(m, f, a...)	printk(KERN_INFO "%s: " f, (m->name) , ## a)
-
-struct adm5120_map_info {
-	struct map_info	map;
-	void 		(*switch_bank)(unsigned);
-	unsigned long	window_size;
-};
-
-struct adm5120_flash_info {
-	struct mtd_info		*mtd;
-	struct resource		*res;
-	struct platform_device	*dev;
-	struct adm5120_map_info	amap;
-#ifdef CONFIG_MTD_PARTITIONS
-	int			nr_parts;
-	struct mtd_partition	*parts[MAX_PARSED_PARTS];
-#endif
-};
-
-struct flash_desc {
-	u32	phys;
-	u32	srs_shift;
-};
-
-/*
- * Globals
- */
-static DEFINE_SPINLOCK(adm5120_flash_spin);
-#define FLASH_LOCK()	spin_lock(&adm5120_flash_spin)
-#define FLASH_UNLOCK()	spin_unlock(&adm5120_flash_spin)
-
-static u32 flash_bankwidths[4] = { 1, 2, 4, 0 };
-
-static u32 flash_sizes[8] = {
-	0, 512*1024, 1024*1024, 2*1024*1024,
-	4*1024*1024, 0, 0, 0
-};
-
-static struct flash_desc flash_descs[2] = {
-	{
-		.phys		= ADM5120_SRAM0_BASE,
-		.srs_shift	= MEMCTRL_SRS0_SHIFT,
-	}, {
-		.phys		= ADM5120_SRAM1_BASE,
-		.srs_shift	= MEMCTRL_SRS1_SHIFT,
-	}
-};
-
-static const char *probe_types[] = {
-	"cfi_probe",
-	"jedec_probe",
-	"map_rom",
-	NULL
-};
-
-#ifdef CONFIG_MTD_PARTITIONS
-static const char *parse_types[] = {
-	"cmdlinepart",
-#ifdef CONFIG_MTD_REDBOOT_PARTS
-	"RedBoot",
-#endif
-#ifdef CONFIG_MTD_MYLOADER_PARTS
-	"MyLoader",
-#endif
-};
-#endif
-
-#define BANK_SIZE	(2<<20)
-#define BANK_SIZE_MAX	(4<<20)
-#define BANK_OFFS_MASK	(BANK_SIZE-1)
-#define BANK_START_MASK	(~BANK_OFFS_MASK)
-
-static inline struct adm5120_map_info *map_to_amap(struct map_info *map)
-{
-	return (struct adm5120_map_info *)map;
-}
-
-static void adm5120_flash_switchbank(struct map_info *map,
-		unsigned long ofs)
-{
-	struct adm5120_map_info *amap = map_to_amap(map);
-	unsigned bank;
-
-	if (amap->switch_bank == NULL)
-		return;
-
-	bank = (ofs & BANK_START_MASK) >> 21;
-	if (bank > 1)
-		BUG();
-
-	MAP_DBG(map, "switching to bank %u, ofs=%lX\n", bank, ofs);
-	amap->switch_bank(bank);
-}
-
-static map_word adm5120_flash_read(struct map_info *map, unsigned long ofs)
-{
-	struct adm5120_map_info *amap = map_to_amap(map);
-	map_word ret;
-
-	MAP_DBG(map, "reading from ofs %lX\n", ofs);
-
-	if (ofs >= amap->window_size)
-		return map_word_ff(map);
-
-	FLASH_LOCK();
-	adm5120_flash_switchbank(map, ofs);
-	ret = inline_map_read(map, (ofs & (amap->window_size-1)));
-	FLASH_UNLOCK();
-
-	return ret;
-}
-
-static void adm5120_flash_write(struct map_info *map, const map_word datum,
-		unsigned long ofs)
-{
-	struct adm5120_map_info *amap = map_to_amap(map);
-
-	MAP_DBG(map, "writing to ofs %lX\n", ofs);
-
-	if (ofs > amap->window_size)
-		return;
-
-	FLASH_LOCK();
-	adm5120_flash_switchbank(map, ofs);
-	inline_map_write(map, datum, (ofs & (amap->window_size-1)));
-	FLASH_UNLOCK();
-}
-
-static void adm5120_flash_copy_from(struct map_info *map, void *to,
-		unsigned long from, ssize_t len)
-{
-	struct adm5120_map_info *amap = map_to_amap(map);
-	char *p;
-	ssize_t t;
-
-	MAP_DBG(map, "copy_from, to=%lX, from=%lX, len=%lX\n",
-		(unsigned long)to, from, (unsigned long)len);
-
-	if (from > amap->window_size)
-		return;
-
-	p = (char *)to;
-	while (len > 0) {
-		t = len;
-		if ((from < BANK_SIZE) && ((from+len) > BANK_SIZE))
-			t = BANK_SIZE-from;
-
-		FLASH_LOCK();
-		MAP_DBG(map, "copying %lu byte(s) from %lX to %lX\n",
-			(unsigned long)t, (from & (amap->window_size-1)),
-			(unsigned long)p);
-		adm5120_flash_switchbank(map, from);
-		inline_map_copy_from(map, p, (from & (amap->window_size-1)), t);
-		FLASH_UNLOCK();
-		p += t;
-		from += t;
-		len -= t;
-	}
-}
-
-static int adm5120_flash_initres(struct adm5120_flash_info *info)
-{
-	struct map_info *map = &info->amap.map;
-	int err = 0;
-
-	info->res = request_mem_region(map->phys, info->amap.window_size,
-			map->name);
-	if (info->res == NULL) {
-		MAP_ERR(map, "could not reserve memory region\n");
-		err = -ENOMEM;
-		goto out;
-	}
-
-	map->virt = ioremap_nocache(map->phys, info->amap.window_size);
-	if (map->virt == NULL) {
-		MAP_ERR(map, "failed to ioremap flash region\n");
-		err = -ENOMEM;
-		goto out;
-	}
-
-out:
-	return err;
-}
-
-static int adm5120_flash_initinfo(struct adm5120_flash_info *info,
-		struct platform_device *dev)
-{
-	struct map_info *map = &info->amap.map;
-	struct adm5120_flash_platform_data *pdata = dev->dev.platform_data;
-	struct flash_desc *fdesc;
-	u32 t = 0;
-
-	map->name = dev->dev.bus_id;
-
-	if (dev->id > 1) {
-		MAP_ERR(map, "invalid flash id\n");
-		goto err_out;
-	}
-
-	fdesc = &flash_descs[dev->id];
-
-	if (pdata)
-		info->amap.window_size = pdata->window_size;
-
-	if (info->amap.window_size == 0) {
-		/* get memory window size */
-		t = SW_READ_REG(SWITCH_REG_MEMCTRL) >> fdesc->srs_shift;
-		t &= MEMCTRL_SRS_MASK;
-		info->amap.window_size = flash_sizes[t];
-	}
-
-	if (info->amap.window_size == 0) {
-		MAP_ERR(map, "unable to determine window size\n");
-		goto err_out;
-	}
-
-	/* get flash bus width */
-	switch (dev->id) {
-	case 0:
-		t = MPMC_READ_REG(SC1) & SC_MW_MASK;
-		break;
-	case 1:
-		t = MPMC_READ_REG(SC0) & SC_MW_MASK;
-		break;
-	}
-	map->bankwidth = flash_bankwidths[t];
-	if (map->bankwidth == 0) {
-		MAP_ERR(map, "invalid bus width detected\n");
-		goto err_out;
-	}
-
-	map->phys = fdesc->phys;
-	map->size = BANK_SIZE_MAX;
-
-	simple_map_init(map);
-	map->read = adm5120_flash_read;
-	map->write = adm5120_flash_write;
-	map->copy_from = adm5120_flash_copy_from;
-
-	if (pdata) {
-		map->set_vpp = pdata->set_vpp;
-		info->amap.switch_bank = pdata->switch_bank;
-	}
-
-	info->dev = dev;
-
-	MAP_INFO(map, "probing at 0x%lX, size:%ldKiB, width:%d bits\n",
-		(unsigned long)map->phys,
-		(unsigned long)info->amap.window_size >> 10,
-		map->bankwidth*8);
-
-	return 0;
-
-err_out:
-	return -ENODEV;
-}
-
-static void adm5120_flash_initbanks(struct adm5120_flash_info *info)
-{
-	struct map_info *map = &info->amap.map;
-
-	if (info->mtd->size <= BANK_SIZE)
-		/* no bank switching needed */
-		return;
-
-	if (info->amap.switch_bank) {
-		info->amap.window_size = info->mtd->size;
-		return;
-	}
-
-	MAP_ERR(map, "reduce visibility from %ldKiB to %ldKiB\n",
-		(unsigned long)map->size >> 10,
-		(unsigned long)info->mtd->size >> 10);
-
-	info->mtd->size = info->amap.window_size;
-}
-
-#ifdef CONFIG_MTD_PARTITIONS
-static int adm5120_flash_initparts(struct adm5120_flash_info *info)
-{
-	struct adm5120_flash_platform_data *pdata;
-	struct map_info *map = &info->amap.map;
-	int num_parsers;
-	const char *parser[2];
-	int err = 0;
-	int nr_parts;
-	int i;
-
-	info->nr_parts = 0;
-
-	pdata = info->dev->dev.platform_data;
-	if (pdata == NULL)
-		goto out;
-
-	if (pdata->nr_parts) {
-		MAP_INFO(map, "adding static partitions\n");
-		err = add_mtd_partitions(info->mtd, pdata->parts,
-			pdata->nr_parts);
-		if (err == 0) {
-			info->nr_parts += pdata->nr_parts;
-			goto out;
-		}
-	}
-
-	num_parsers = ARRAY_SIZE(parse_types);
-	if (num_parsers > MAX_PARSED_PARTS)
-		num_parsers = MAX_PARSED_PARTS;
-
-	parser[1] = NULL;
-	for (i = 0; i < num_parsers; i++) {
-		parser[0] = parse_types[i];
-
-		MAP_INFO(map, "parsing \"%s\" partitions\n",
-			parser[0]);
-		nr_parts = parse_mtd_partitions(info->mtd, parser,
-			&info->parts[i], 0);
-
-		if (nr_parts <= 0)
-			continue;
-
-		MAP_INFO(map, "adding \"%s\" partitions\n",
-			parser[0]);
-
-		err = add_mtd_partitions(info->mtd, info->parts[i], nr_parts);
-		if (err)
-			break;
-
-		info->nr_parts += nr_parts;
-	}
-out:
-	return err;
-}
-#else
-static int adm5120_flash_initparts(struct adm5120_flash_info *info)
-{
-	return 0;
-}
-#endif /* CONFIG_MTD_PARTITIONS */
-
-#ifdef CONFIG_MTD_PARTITIONS
-static void adm5120_flash_remove_mtd(struct adm5120_flash_info *info)
-{
-	int i;
-
-	if (info->nr_parts) {
-		del_mtd_partitions(info->mtd);
-		for (i = 0; i < MAX_PARSED_PARTS; i++)
-			if (info->parts[i] != NULL)
-				kfree(info->parts[i]);
-	} else {
-		del_mtd_device(info->mtd);
-	}
-}
-#else
-static void adm5120_flash_remove_mtd(struct adm5120_flash_info *info)
-{
-	del_mtd_device(info->mtd);
-}
-#endif
-
-static int adm5120_flash_remove(struct platform_device *dev)
-{
-	struct adm5120_flash_info *info;
-
-	info = platform_get_drvdata(dev);
-	if (info == NULL)
-		return 0;
-
-	platform_set_drvdata(dev, NULL);
-
-	if (info->mtd != NULL) {
-		adm5120_flash_remove_mtd(info);
-		map_destroy(info->mtd);
-	}
-
-	if (info->amap.map.virt != NULL)
-		iounmap(info->amap.map.virt);
-
-	if (info->res != NULL) {
-		release_resource(info->res);
-		kfree(info->res);
-	}
-
-	return 0;
-}
-
-static int adm5120_flash_probe(struct platform_device *dev)
-{
-	struct adm5120_flash_info *info;
-	struct map_info *map;
-	const char **probe_type;
-	int err;
-
-	info = kzalloc(sizeof(*info), GFP_KERNEL);
-	if (info == NULL) {
-		err = -ENOMEM;
-		goto err_out;
-	}
-
-	platform_set_drvdata(dev, info);
-
-	err = adm5120_flash_initinfo(info, dev);
-	if (err)
-		goto err_out;
-
-	err = adm5120_flash_initres(info);
-	if (err)
-		goto err_out;
-
-	map = &info->amap.map;
-	for (probe_type = probe_types; info->mtd == NULL && *probe_type != NULL;
-		probe_type++)
-		info->mtd = do_map_probe(*probe_type, map);
-
-	if (info->mtd == NULL) {
-		MAP_ERR(map, "map_probe failed\n");
-		err = -ENXIO;
-		goto err_out;
-	}
-
-	adm5120_flash_initbanks(info);
-
-	if (info->mtd->size < info->amap.window_size) {
-		/* readjust resources */
-		iounmap(map->virt);
-		release_resource(info->res);
-		kfree(info->res);
-
-		info->amap.window_size = info->mtd->size;
-		map->size = info->mtd->size;
-		MAP_INFO(map, "reducing map size to %ldKiB\n",
-			(unsigned long)map->size >> 10);
-		err = adm5120_flash_initres(info);
-		if (err)
-			goto err_out;
-	}
-
-	MAP_INFO(map, "found at 0x%lX, size:%ldKiB, width:%d bits\n",
-		(unsigned long)map->phys, (unsigned long)info->mtd->size >> 10,
-		map->bankwidth*8);
-
-	info->mtd->owner = THIS_MODULE;
-
-	err = adm5120_flash_initparts(info);
-	if (err)
-		goto err_out;
-
-	if (info->nr_parts == 0) {
-		MAP_INFO(map, "no partitions available, registering "
-			"whole flash\n");
-		add_mtd_device(info->mtd);
-	}
-
-	return 0;
-
-err_out:
-	adm5120_flash_remove(dev);
-	return err;
-}
-
-#ifdef CONFIG_PM
-static int adm5120_flash_suspend(struct platform_device *dev,
-		pm_message_t state)
-{
-	struct adm5120_flash_info *info = platform_get_drvdata(dev);
-	int ret = 0;
-
-	if (info)
-		ret = info->mtd->suspend(info->mtd);
-
-	return ret;
-}
-
-static int adm5120_flash_resume(struct platform_device *dev)
-{
-	struct adm5120_flash_info *info = platform_get_drvdata(dev);
-
-	if (info)
-		info->mtd->resume(info->mtd);
-
-	return 0;
-}
-
-static void adm5120_flash_shutdown(struct platform_device *dev)
-{
-	struct adm5120_flash_info *info = platform_get_drvdata(dev);
-
-	if (info && info->mtd->suspend(info->mtd) == 0)
-		info->mtd->resume(info->mtd);
-}
-#endif
-
-static struct platform_driver adm5120_flash_driver = {
-	.probe		= adm5120_flash_probe,
-	.remove		= adm5120_flash_remove,
-#ifdef CONFIG_PM
-	.suspend	= adm5120_flash_suspend,
-	.resume		= adm5120_flash_resume,
-	.shutdown	= adm5120_flash_shutdown,
-#endif
-	.driver		= {
-		.name	= DRV_NAME,
-	},
-};
-
-static int __init adm5120_flash_init(void)
-{
-	int err;
-
-	err = platform_driver_register(&adm5120_flash_driver);
-
-	return err;
-}
-
-static void __exit adm5120_flash_exit(void)
-{
-	platform_driver_unregister(&adm5120_flash_driver);
-}
-
-module_init(adm5120_flash_init);
-module_exit(adm5120_flash_exit);
-
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Gabor Juhos <juhosg at openwrt.org>");
-MODULE_DESCRIPTION(DRV_DESC);
diff --git a/target/linux/adm5120/files/drivers/mtd/myloader.c b/target/linux/adm5120/files/drivers/mtd/myloader.c
deleted file mode 100644
index 9dab9d18d..000000000
--- a/target/linux/adm5120/files/drivers/mtd/myloader.c
+++ /dev/null
@@ -1,167 +0,0 @@
-/*
- *  $Id$
- *
- *  Parse MyLoader-style flash partition tables and produce a Linux partition
- *  array to match.
- *
- *  Copyright (C) 2007 OpenWrt.org
- *  Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
- *
- *  This file was based on drivers/mtd/redboot.c
- *  Author: Red Hat, Inc. - David Woodhouse <dwmw2@cambridge.redhat.com>
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/vmalloc.h>
-
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/partitions.h>
-
-#include <linux/byteorder/generic.h>
-
-#include <prom/myloader.h>
-
-#define NAME_LEN_MAX		20
-#define NAME_MYLOADER		"MyLoader"
-#define NAME_PARTITION_TABLE	"Partition Table"
-#define BLOCK_LEN_MIN		0x10000
-
-int parse_myloader_partitions(struct mtd_info *master,
-			struct mtd_partition **pparts,
-			unsigned long origin)
-{
-	struct mylo_partition_table *tab;
-	struct mylo_partition *part;
-	struct mtd_partition *mtd_parts;
-	struct mtd_partition *mtd_part;
-	int num_parts;
-	int ret, i;
-	size_t retlen;
-	char *names;
-	unsigned long offset;
-	unsigned long blocklen;
-
-	tab = vmalloc(sizeof(*tab));
-	if (!tab) {
-		return -ENOMEM;
-		goto out;
-	}
-
-	blocklen = master->erasesize;
-	if (blocklen < BLOCK_LEN_MIN)
-		blocklen = BLOCK_LEN_MIN;
-
-	/* Partition Table is always located on the second erase block */
-	offset = blocklen;
-	printk(KERN_NOTICE "%s: searching for MyLoader partition table at "
-			"offset 0x%lx\n", master->name, offset);
-
-	ret = master->read(master, offset, sizeof(*tab), &retlen, (void *)tab);
-	if (ret)
-		goto out;
-
-	if (retlen != sizeof(*tab)) {
-		ret = -EIO;
-		goto out_free_buf;
-	}
-
-	/* Check for Partition Table magic number */
-	if (tab->magic != le32_to_cpu(MYLO_MAGIC_PARTITIONS)) {
-		printk(KERN_NOTICE "%s: no MyLoader partition table found\n",
-			master->name);
-		ret = 0;
-		goto out_free_buf;
-	}
-
-	/* The MyLoader and the Partition Table is always present */
-	num_parts = 2;
-
-	/* Detect number of used partitions */
-	for (i = 0; i < MYLO_MAX_PARTITIONS; i++) {
-		part = &tab->partitions[i];
-
-		if (le16_to_cpu(part->type) == PARTITION_TYPE_FREE)
-			continue;
-
-		num_parts++;
-	}
-
-	mtd_parts = kzalloc((num_parts * sizeof(*mtd_part) +
-				num_parts * NAME_LEN_MAX), GFP_KERNEL);
-
-	if (!mtd_parts) {
-		ret = -ENOMEM;
-		goto out_free_buf;
-	}
-
-	mtd_part = mtd_parts;
-	names = (char *)&mtd_parts[num_parts];
-
-	strncpy(names, NAME_MYLOADER, NAME_LEN_MAX-1);
-	mtd_part->name = names;
-	mtd_part->offset = 0;
-	mtd_part->size = blocklen;
-	mtd_part->mask_flags = MTD_WRITEABLE;
-	mtd_part++;
-	names += NAME_LEN_MAX;
-
-	strncpy(names, NAME_PARTITION_TABLE, NAME_LEN_MAX-1);
-	mtd_part->name = names;
-	mtd_part->offset = blocklen;
-	mtd_part->size = blocklen;
-	mtd_part->mask_flags = MTD_WRITEABLE;
-	mtd_part++;
-	names += NAME_LEN_MAX;
-
-	for (i = 0; i < MYLO_MAX_PARTITIONS; i++) {
-		part = &tab->partitions[i];
-
-		if (le16_to_cpu(part->type) == PARTITION_TYPE_FREE)
-			continue;
-
-		sprintf(names, "partition%d", i);
-		mtd_part->offset = le32_to_cpu(part->addr);
-		mtd_part->size = le32_to_cpu(part->size);
-		mtd_part->name = names;
-		mtd_part++;
-		names += NAME_LEN_MAX;
-	}
-
-	*pparts = mtd_parts;
-	ret = num_parts;
-
-out_free_buf:
-	vfree(tab);
-out:
-	return ret;
-}
-
-static struct mtd_part_parser mylo_mtd_parser = {
-	.owner = THIS_MODULE,
-	.parse_fn = parse_myloader_partitions,
-	.name = NAME_MYLOADER,
-};
-
-static int __init mylo_mtd_parser_init(void)
-{
-	return register_mtd_parser(&mylo_mtd_parser);
-}
-
-static void __exit mylo_mtd_parser_exit(void)
-{
-	deregister_mtd_parser(&mylo_mtd_parser);
-}
-
-module_init(mylo_mtd_parser_init);
-module_exit(mylo_mtd_parser_exit);
-
-MODULE_AUTHOR("Gabor Juhos <juhosg at openwrt.org>");
-MODULE_DESCRIPTION("Parsing code for MyLoader partition tables");
-MODULE_LICENSE("GPL v2");
diff --git a/target/linux/adm5120/files/drivers/mtd/trxsplit.c b/target/linux/adm5120/files/drivers/mtd/trxsplit.c
deleted file mode 100644
index 49eb0f979..000000000
--- a/target/linux/adm5120/files/drivers/mtd/trxsplit.c
+++ /dev/null
@@ -1,220 +0,0 @@
-/*
- *  $Id$
- *
- *  Copyright (C) 2007 OpenWrt.org
- *  Copyright (C) Gabor Juhos <juhosg at openwrt.org>
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- *
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/list.h>
-#include <linux/kmod.h>
-#include <linux/root_dev.h>
-
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/partitions.h>
-
-#include <linux/byteorder/generic.h>
-
-#define PFX	"trxsplit: "
-
-#define TRX_MAGIC	0x30524448	/* "HDR0" */
-#define TRX_VERSION	1
-#define TRX_MAX_LEN	0x3A0000
-#define TRX_NO_HEADER	0x1	/* do not write TRX header */
-#define TRX_GZ_FILES	0x2     /* contains individual gzip files */
-#define TRX_MAX_OFFSET	3
-#define TRX_MIN_KERNEL_SIZE	256*1024
-
-struct trx_header {
-	u32 magic;	/* "HDR0" */
-	u32 len;	/* Length of file including header */
-	u32 crc32;	/* 32-bit CRC from flag_version to end of file */
-	u32 flag_version; /* 0:15 flags, 16:31 version */
-	u32 offsets[TRX_MAX_OFFSET]; /* Offsets of partitions */
-};
-
-#define TRX_ALIGN	0x1000
-
-static int trx_nr_parts;
-static unsigned long trx_offset;
-static struct mtd_info *trx_mtd;
-static struct mtd_partition trx_parts[TRX_MAX_OFFSET];
-static struct trx_header trx_hdr;
-
-static int trxsplit_refresh_partitions(struct mtd_info *mtd);
-
-static int trxsplit_checktrx(struct mtd_info *mtd, unsigned long offset)
-{
-	size_t retlen;
-	int err;
-
-	err = mtd->read(mtd, offset, sizeof(trx_hdr), &retlen,
-			(void *)&trx_hdr);
-	if (err) {
-		printk(KERN_ALERT PFX "unable to read from '%s'\n", mtd->name);
-		goto err_out;
-	}
-
-	if (retlen != sizeof(trx_hdr)) {
-		printk(KERN_ALERT PFX "reading failed on '%s'\n", mtd->name);
-		goto err_out;
-	}
-
-	trx_hdr.magic = le32_to_cpu(trx_hdr.magic);
-	trx_hdr.len = le32_to_cpu(trx_hdr.len);
-	trx_hdr.crc32 = le32_to_cpu(trx_hdr.crc32);
-	trx_hdr.flag_version = le32_to_cpu(trx_hdr.flag_version);
-	trx_hdr.offsets[0] = le32_to_cpu(trx_hdr.offsets[0]);
-	trx_hdr.offsets[1] = le32_to_cpu(trx_hdr.offsets[1]);
-	trx_hdr.offsets[2] = le32_to_cpu(trx_hdr.offsets[2]);
-
-	/* sanity checks */
-	if (trx_hdr.magic != TRX_MAGIC)
-		goto err_out;
-
-	if (trx_hdr.len > mtd->size - offset)
-		goto err_out;
-
-	/* TODO: add crc32 checking too? */
-
-	return 0;
-
-err_out:
-	return -1;
-}
-
-static void trxsplit_findtrx(struct mtd_info *mtd)
-{
-	unsigned long offset;
-	int err;
-
-	printk(KERN_INFO PFX "searching TRX header in '%s'\n", mtd->name);
-
-	err = 0;
-	for (offset = 0; offset < mtd->size; offset += TRX_ALIGN) {
-		err = trxsplit_checktrx(mtd, offset);
-		if (err == 0)
-			break;
-	}
-
-	if (err)
-		return;
-
-	printk(KERN_INFO PFX "TRX header found at 0x%lX\n", offset);
-
-	trx_mtd = mtd;
-	trx_offset = offset;
-}
-
-static void trxsplit_create_partitions(struct mtd_info *mtd)
-{
-	struct mtd_partition *part = trx_parts;
-	int err;
-	int i;
-
-	for (i = 0; i < TRX_MAX_OFFSET; i++) {
-		part = &trx_parts[i];
-		if (trx_hdr.offsets[i] == 0)
-			continue;
-		part->offset = trx_offset + trx_hdr.offsets[i];
-		trx_nr_parts++;
-	}
-
-	for (i = 0; i < trx_nr_parts-1; i++)
-		trx_parts[i].size = trx_parts[i+1].offset - trx_parts[i].offset;
-
-	trx_parts[i].size = mtd->size - trx_parts[i].offset;
-
-	i = 0;
-	part = &trx_parts[i];
-	if (part->size < TRX_MIN_KERNEL_SIZE) {
-		part->name = "loader";
-		i++;
-	}
-
-	part = &trx_parts[i];
-	part->name = "kernel";
-	i++;
-
-	part = &trx_parts[i];
-	part->name = "rootfs";
-
-	err = add_mtd_partitions(mtd, trx_parts, trx_nr_parts);
-	if (err) {
-		printk(KERN_ALERT PFX "adding TRX partitions failed\n");
-		return;
-	}
-
-	mtd->refresh_device = trxsplit_refresh_partitions;
-}
-
-static int trxsplit_refresh_partitions(struct mtd_info *mtd)
-{
-	printk(KERN_INFO PFX "refreshing TRX partitions in '%s' (%d,%d)\n",
-		mtd->name, MTD_BLOCK_MAJOR, mtd->index);
-
-	/* remove old partitions */
-	del_mtd_partitions(mtd);
-
-	trxsplit_findtrx(mtd);
-	if (!trx_mtd)
-		goto err;
-
-	trxsplit_create_partitions(trx_mtd);
-	return 1;
-
-err:
-	return 0;
-}
-
-static void __init trxsplit_add_mtd(struct mtd_info *mtd)
-{
-	if (mtd->type != MTD_NORFLASH) {
-		printk(KERN_INFO PFX "'%s' is not a NOR flash, skipped\n",
-				mtd->name);
-		return;
-	}
-
-	if (!trx_mtd)
-		trxsplit_findtrx(mtd);
-}
-
-static void __init trxsplit_remove_mtd(struct mtd_info *mtd)
-{
-	/* nothing to do */
-}
-
-static struct mtd_notifier trxsplit_notifier __initdata = {
-	.add	= trxsplit_add_mtd,
-	.remove	= trxsplit_remove_mtd,
-};
-
-static void __init trxsplit_scan(void)
-{
-	register_mtd_user(&trxsplit_notifier);
-	unregister_mtd_user(&trxsplit_notifier);
-}
-
-static int __init trxsplit_init(void)
-{
-	trxsplit_scan();
-
-	if (trx_mtd) {
-		printk(KERN_INFO PFX "creating TRX partitions in '%s' "
-			"(%d,%d)\n", trx_mtd->name, MTD_BLOCK_MAJOR,
-			trx_mtd->index);
-		trxsplit_create_partitions(trx_mtd);
-	}
-
-	return 0;
-}
-
-late_initcall(trxsplit_init);